A chemist (John Mills) suffering PTSD from a traumatic brain injury comes under suspicion of the murder of an acquaintance (Kay Walsh) and the pressure of proving his innocence threatens to cause a relapse of his mental illness. adapted by Eric Ambler from his novel John Mills as Jim Ackland Joan Greenwood as Jenny Carden Edward Chapman as Mr. Peachy Kay Walsh as Molly Newman Joyce Carey as Mrs. Vinton Catherine Lacey as Miss Selby Adrianne Allen as Joyce Carden Felix Aylmer as Dr. Martin